PRÜFTECHNIK EDDYSENSOR Manuale utente

Operating manual

EDDYSENSOR

Doc. no. LAB 5329 Release 26.8.97 Release 4

EDDYCHEK®isaregisteredtrademarkofPRÜFTECHNIK

AG. The information contained in this leaflet is subject to

change without further notice due to the PRÜFTECHNIK

policy of continuous product development.

tion, in any form whatsoever, may be undertaken without

express written permission of PRÜFTECHNIK.

PRÜFTECHNIK NDT GmbH

Fischerfleck 8

D-85737 Ismaning, Germany

Telephone: +49 (0) 89/9 96 16-0

Telefax: +49 (0) 89/96 79 90

eMail: [email protected]

EDDYSENSOR Operating Manual

Contents Page

Safety instructions iv - vi

System diagram 1

Backplate connections of the EDDYSENSOR 2

1030 Front End Unit 3

Front module 3

Setting the gain 3

LED monitoring function 3

Filtering 4

Filter setting 4

F3 filter 4

F1 and F2 filters 5

Filter-to-speed relationship for filters F1 and F2 5

Graph of the F1 and F2 filter settings for normal applications 6

Graph of the F1 and F2 filter settings for slow applications 7

Graph of the F1 and F2 filter settings for fast applications 8

Back module 9

Connection of display device 9

Digital I/O 9

Test signal suppression 9

Connection of PLC or similar 10

Example of use 10

1031 Front End Unit 11

Front module 11

Setting the gain 11

LED monitoring function 11

Functions of the Gain switch 12

Summary of the displays 12

Manual gain setting 12

Filtering 13

Filter settings for F1 and F2 13

High pass filter settings for F1 and F2 14

Low pass filter settings for F1 and F2 14

Filter settings for F3 15

How to establish the filter settings 15

Filter settings for FI 1031 F1 and F2 16

ii EDDYSENSOR Operating Manual

1031 Back module 17

Connection of display device 17

Digital I/O 17

Test signal suppression 17

Connection of PLC or similar 18

Example of use 18

Delay unit 19

Front module 19

Switch settings 20

Front module -upper PCB 20

Delay 20

Duration 20

Prescaler 21

Activating the outputs 21

Line mode 22

Back module 22

PCB (showing modification status d) 22

System error (from modification status e onwards) 22

Encoder switch up to modification status d 22

Encoder switch from modification status e onwards 22

Encoder socket pin assignment 23

Output sockets 24

Fuses up to modification status d 25

Fuses from modification status e onwards 25

Changing a fuse 25

LAB 1110 connection box 26

Power unit 27

Function 27

Front module 27

Fuses for mains and operating voltages 27

Changing fuses 28

Back module 28

Example: WICU line with encoder 29-31

iii

EDDYSENSOR Operating Manual

Pin allocation of the I/O sockets 32

Analog signal output socket 32

Digital signal output socket 32

Encoder socket on DI1050BA 32

Potential-free output socket 33

Examples of connections using Digital I/O socket output 3434

3434

Alarm unit via a PLC 34

Alarm unit via a time-lag relay 34

Alarm unit via a time-lag relay using the internal current supply 34

Locating and changing fuses 35

Delay unit 35

PCB of the back module 35

Fuses up to modification status d 35

Fuses from modification status e onwards 35

Replacing the fuses 35

Power unit 36

Fuses 36

PCB of the front module 36

Replacing the fuses 36

Appendix - Filter tables 37

Technical data

iv EDDYSENSOR Operating Manual

General information

Due to the nature of eddycurrent testing, strong

electro-magnetic fields could affect the test results.

Areas of use This equipment is intended for use exclusively in collecting

and processing eddycurrent test data in areas where there

is no danger of explosion.

Electro-magnetic

compatibility

This equipment was tested for electro-magnetic compatibil-

ity according to EN 55011 Group 1, Class A and EN 50082-

Operative restrictions Using this equipment in a residential area can lead to electro-

magnetic interference and therefore requires special authori-

zation from the national regulatory agency for post and tel-

ecommunications (BAPT).

Installation site

requirements

Installation instructions

•Temperature range: see "Technical Data"

•Flat, level installation surface

•Equipment must be far enough away from the wall to open

the rear door easily and access the interior

(For actual dimensions, see "Technical Data" at the back of

the operating manual.)

Technical data

The technical data relevant to this equipment is listed at the

back of the Operating Manual.

EDDYSENSOR Operating Manual

Safety information

ESD instructions

•Ensure that the power is off and disconnected from the

equipment (pull out the plug) before opening it

• Do not use the equipment with the housing open

•Repair work must only be carried out by authorized

specialists

•Use only original spare parts and accessories

•Only trained personnel may carry out service and

maintenance

•Any modification carried out without the agreement of the

manufacturer invalidates the guarantee

Safety instructions

vi EDDYSENSOR Operating Manual

Exchanging the plug-in modules

EDDYSENSOR Operating Manual

The EDDYSENSOR is a simple eddycurrent detection

device which senses the presence of a defect to

activate subsequent activities, e.g. shutting off the

cooling water in a welding line with annealing. The

minimum configuration consists of two units in a table-

top housing. A third unit is optional.

The minimum configuration is made up of the Front

End Unit in the left-hand position and the Power Unit in

the right-hand position. For safety reasons, the back

module of the Power Unit is supplied immovably as-

sembled in the table-top housing, LAB 1004. The op-

tional unit is the Delay Unit in the middle position. The

modules and their positions are shown in the diagram

above.

EDDYSENSOR System Diagram

Output signal

to peripherals

Input signal from test coil

Front End Unit

Front module

FM103xF

Optional

Power Unit

Delay Unit

Back module

FI103xBAfff

Front module

DM1050F

Back module

DI1050BA

Front module

PM1040F

Back module

PI1040BA

2EDDYSENSOR Operating Manual

The diagram shows the backplate of the EDDYSENSOR. The inputs and outputs are also shown. The output

signal for the configuration without the Delay Unit is taken from the backplate of the Front End Unit whereas for

the configuration with the Delay Unit, the delayed output signal is taken from the potential-free output on the

backplate of the Delay Unit.

EDDYSENSOR with Delay Unit

Backplate connections of the EDDYSENSOR

IMPORTANT

Whenever a module is removed or inserted

ensure that the power is OFF and the mains plug pulled OUT.

Also, the ESD instructions given on the separate sheet

at the front of this handbook must be observed

when any work is carried out on the equipment.

Voltage switch

between 115V/230V

Socket for

power supply

Delayed and undelayed

signal outputs for the

configuration with the

Delay Unit

Analog signal to

display the defect,

e.g. on a recorder, bar

graph or oscillo-

scope

Defect output of an

undelayed digital

signal for switching

peripherals such as

PLC, warning units,

etc.

Input signal from the

line encoder Coil

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